Elevated railroad



(No Model.)

D. MOULTON.

I ELEVATED RAILROAD. No. 345,645. Patented July 13, 1886.

" mnlum A mmm UNITED STATES PATENT, OFFICE.

DAVID MOULTON, OF MALDEN, MASSACHUSETTS.

ELEVATED RAILROAD.

' SPECIFICATION forming part of Letters Patent No. 345,645, dated July13, 1886.

Application filed July 17,1885. Serial No. 171,837. (No model.)

To all whom it may concern:

Be it known that I, DAVID MoUL'roN, a citizen of the United States,residing at Malden, in the county of Middlesex and State ofMassachusetts, have invented certain new and useful Improvements inElevated Railroads, of which the following is a specification.

My invention relates to certain improvements in elevated railroads to besupported upon a single line of posts or columns in connection with thetrucks of the cars to be run thereon; and the invention consists incertain details of construction hereinafter fully described, and pointedout in the claims.

Referring to the accompanying drawings, Figure 1 represents a sideelevation of a portion of a railroad and car embodying my invention.Fig. 2 is atransverse sectionof the elevated railroad and an end view ofthe truck or'bogie frame, on an enlarged scale. Fig. 3 is a side view ofthe truck or bogie frame, and Fig. at is a plan-or top view of the same.

A A are columns or-posts arranged in a single line, upon which issupported a deep girder composed of twolongitudinal stringers, B B, oneabove the other, and connected together by uprights b and braces I), andfirmly held by bolts 0 c, this construction being the same as thatdescribed and shown in Patent No. 312,004, granted to me February 10,1885.

On each side of the lower stringer, B, are secured a series of brackets,O O, the upper surfaces of which are flush with the top of the stringer.v

D D are sleeperslaid across the stringer and secured to the brackets CO. To the outer ends of these sleepers are secured sills E,that carrythe rails F. By this arrangement I am enabled to have the track of anydesired gage, which may be made to correspond with a track laid upon theground,so that when the railway passes through a city it can be elevatedon a single line of posts, and when it leaves the city may be laid uponthe ground.

The trucks or bogie-frames that support the car G are each composed offour longitudinal timbers, H H, secured together at each end and in thecenter by transverse timbers H H.

To the longitudinal timbers H H are secured pedestals I I, in which arethe axle-boxes J J. There are two of these pedestals I to. each wheelL-that is, one on each side-so that, only a short axle, K, is required,each wheel being thus independent of the other. The truck can easily runround very sharp curves.

M M are friction-wheels supported by suit able braces, N N, bolted tothe pedestals I I.

I? P are springs,working in the pedestals I above and bearing on theaxle-boxes J.

It will be seen that the truck-frame, as herein described, is equallyapplicable to steam and street railway cars, as the difliculty inturning sharp curves is entirely overcome by the use of the short axlesK.

\Vhat I claim as my invent-ion is 1. An elevated-railroad track andsupport, consisting of a girder composed oftwo stringers, B B, arrangedone above the other and connected together by uprights b and braces b,in combination with the sleepers D, brackets G, the sills E, rails F,and the supporting columns A, all as shown and described.

2. The wheels L L, journaled on the short axles K K in the lower end ofthe pedestals I I, and extending below the said pedestals, two pedestalsbeing placed on each side of the truclcframe H II, and each two having awheel journalcd therein, as shown and described.

3. The combination of the frame H H H, pedestals I I, wheels L L,journaled on the short axles K in boxes J, the horizontal wheels M M,stringers B, rails F on sills E, sleepers D, and columns A, as shown anddescribed.

In testimony \vhcreofI have signed my name to this specification in thepresence of two subscribing witnesses.

DAVID MOULTON.

Witnesses:

J. H. ADAMS, E. PLANTA.

